Compaq AP500 User Manual

Page 151

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7-18

Physical and Operating Specifications

Table 7-15

18-GB Wide Ultra2 Hard Drive (10,000 RPM)

Performance Criteria

Value

Capacity

18.2 GB

Set Capacity

18209 MB

Data Cylinders

6962

Data Heads/Cylinders

Sectors/Track

167-254 (11 Zones)

Data Bytes/Sector

512

Buffer Size

1024 kB

Sector Interleave

1:1

Maximum Time From

Power On to Selection

Reset to Selection

3 seconds (from power applied)

250 ms (from power applied)

Seek Times, Typical

Track to Track

Average

Full Stroke

READWRITE

1.0 ms1.3 ms

6.2 ms6.8 ms

<18 ms<20 ms

Disk Rotation Speed, Nominal

10025 rpm

Average Latency, Maximum

2.99 ms

Max. Data Transfer Rate

To/From Disc.

@ Interface

Asynchronous

Synchronous

19 – 28.9 MB/s

10 MB/s

Up to 40 MB/s

Monitor and Performance Limits

Spin-Up

Test 1, Track Seek

Test 2, 1/3 rd Stroke Seek

Test 3, Full Seek

Reallocated Sectors

45.3 sec

0.9 ms

8.8 ms

15.6 ms

7200

NOTE: Drive performance may vary slightly depending upon the vendor.